/Engine/Plugins/Runtime/NetworkPrediction/Source/NetworkPrediction/Public/NetworkPredictionDriver.h
This can be automated for physics (the PhysicsState can generically marshal the data). We can't do this for kinematic sims.
static void RestoreFrame ( [DriverType](API\Plugins\NetworkPrediction\FNetworkPredictionDriverBase\DriverType) * Driver, const [SyncType](API\Plugins\NetworkPrediction\FNetworkPredictionDriverBase\SyncType) * SyncState, const [AuxType](API\Plugins\NetworkPrediction\FNetworkPredictionDriverBase\AuxType) * AuxState )